Collema byrsaeum f. hypomelaenum Nyl., 1859 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Peltigerales family Pannariaceae genus Physma species Physma byrsaeum Name Homonyms Collema byrsaeum f. hypomelaenum Nyl., 1859